Question

public: /this makes the functions that are coded later public 8. Write a default constructor for the class ThreeDimensions. 9. Write a copy constructor for the class ThreeDimensions. . e a srctor that has three parameters and sets the values of the private data the values of the parameters. 11. Write a length function that returns the square root of x squared plus y squared plus z squared.

Answer 1

//c++

#include<iostream>
#include <cmath>
using namespace std;
class ThreeDimensions
{
   private:
   int x,y,z;
   public:
   ThreeDimensions()
   {
x=0;
y=3;
z=4;
   }
   ThreeDimensions(int x1,int y1,int z1)
   {
x=x1;
y=y1;
z=z1;
   }
   ThreeDimensions(const ThreeDimensions &t)
   {
x=t.x;
y=t.y;
z=t.z;
   }
   double length()
   {
   return sqrt(x*x+y*y+z*z);
  
   }
};
int main()
{
       ThreeDimensions t1;
       ThreeDimensions t2(4,6,7);
       ThreeDimensions t3=t2;
       cout<<t1.length()<<endl;
       cout<<t2.length()<<endl;
       cout<<t3.length();
}

Memory(MB) : 3.4060669592285 Time(sec) 0 Output: Copy 10.0499 10.0499

//java

import java.lang.Math;
class ThreeDimensions
{
   private int x,y,z;

//8. default constructor that initializes the default values
   public ThreeDimensions()
   {
this.x=0;
this.y=3;
this.z=4;
   }

//10. parameterized constructor that initializes the private data values to values of parameters
   public ThreeDimensions(int x,int y,int z)
   {
this.x=x;
this.y=y;
this.z=z;
   }

//9. copy constructor that copies the object passed in paramenter to local object
   public ThreeDimensions(ThreeDimensions t)
   {
this.x=t.x;
this.y=t.y;
this.z=t.z;
   }

/// method that calculates the cquare root of x²+y²+z²
   public double length()
   {
   return Math.sqrt(x*x+y*y+z*z);
  
   }
   public static void main(String[] args)
   {
       ThreeDimensions t1 = new ThreeDimensions();
       ThreeDimensions t2 = new ThreeDimensions(4,6,7);
       ThreeDimensions t3 = new ThreeDimensions(t2);
       System.out.println(t1.length());
       System.out.println(t2.length());
       System.out.println(t3.length());
   }
}

Memory(MB) 53.668 Time(sec) : 0.1 Output: Copy 5.0 10.04987562112089 10.04987562112089

Memory(MB) 53.668 Time(sec) : 0.1 Output: Copy 5.0 10.04987562112089 10.04987562112089